##############################################
# OpenWrt Makefile for helloworld program
#
#
# Most of the variables used here are defined in
# the include directives below. We just need to
# specify a basic description of the package,
# where to build our program, where to find
# the source files, and where to install the
# compiled program on the router.
#
# Be very careful of spacing in this file.
# Indents should be tabs, not spaces, and
# there should be no trailing whitespace in
# lines that are not commented.
#
##############################################
include $(TOPDIR)/rules.mk
 
# Name and release number of this package
PKG_NAME:=luvi
PKG_RELEASE:=1
 
# This specifies the directory where we're going to build the program. 
# The root build directory, $(BUILD_DIR), is by default the build_mipsel
# directory in your OpenWrt SDK directory
 
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
 
include $(INCLUDE_DIR)/package.mk
 
# Specify package information for this program.
# The variables defined here should be self explanatory.
# If you are running Kamikaze, delete the DESCRIPTION
# variable below and uncomment the Kamikaze define
# directive for the description below
define Package/luvi
	SECTION:=utils
	CATEGORY:=Utilities
	TITLE:=luvi
endef
# Uncomment portion below for Kamikaze and delete DESCRIPTION variable above
define Package/luvi/description
	luvi for openwrt
endef
# Specify what needs to be done to prepare for building the package.
# In our case, we need to copy the source files to the build directory.
# This is NOT the default.  The default uses the PKG_SOURCE_URL and the
# PKG_SOURCE which is not defined here to download the source from the web.
# In order to just build a simple program that we have just written, it is
# much easier to do it this way.
define Build/Prepare
	mkdir -p $(PKG_BUILD_DIR)
	$(CP) ./luvi/* $(PKG_BUILD_DIR)/
endef
define Build/Configure
endef
# USER_LDFLAGS:=/home/user/zhaoyu/lorawan/openwrt_widora/./staging_dir/toolchain-mipsel_24kec+dsp_gcc-4.8-linaro_uClibc-0.9.33.2/lib/ld-uClibc.so.0
define Build/Compile
	@echo build...
	@cd $(PKG_BUILD_DIR)
	@echo git update...
	@git submodule update --init --recursive
	@echo $(TARGET_LDFLAGS)
	$(MAKE) tiny -C $(PKG_BUILD_DIR) \
		CC="$(TARGET_CC)" \
		CFLAGS="$(TARGET_CFLAGS) -Wall -ldl" \
		LDFLAGS="$(TARGET_LDFLAGS)"
	$(MAKE) -C $(PKG_BUILD_DIR) \
		CC="$(TARGET_CC)" \
		CFLAGS="$(TARGET_CFLAGS) -Wall -ldl" \
		LDFLAGS="$(TARGET_LDFLAGS)"
	@cd -
endef
# We do not need to define Build/Configure or Build/Compile directives
# The defaults are appropriate for compiling a simple program such as this one
# Specify where and how to install the program. Since we only have one file,
# the helloworld executable, install it by copying it to the /bin directory on
# the router. The $(1) variable represents the root directory on the router running
# OpenWrt. The $(INSTALL_DIR) variable contains a command to prepare the install
# directory if it does not already exist.  Likewise $(INSTALL_BIN) contains the
# command to copy the binary file from its current location (in our case the build
# directory) to the install directory.
define Package/luvi/install
	@echo no install...
endef
# This line executes the necessary commands to compile our program.
# The above define directives specify all the information needed, but this
# line calls BuildPackage which in turn actually uses this information to
# build a package.
$(eval $(call BuildPackage,luvi))
